Quantum theory of the magnetochiral anisotropy coefficient in ZrTe$_5$
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866913238266937344 |
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| author | Wang, Yi-Xiang Li, Fuxiang |
| author_facet | Wang, Yi-Xiang Li, Fuxiang |
| contents | Recent experiments performed the nonreciprocal magneotransport in ZrTe$_5$ and obtained a giant magnetochiral anisotropy (MCA) coefficient $γ'$. The existing theoretical analysis was based on the semiclassical Boltzmann equation. In this paper, we develop a full quantum theory to calculate $γ'$ and further explore the underlying physics. We reveal that the $xz$-mirror symmetry breaking term also breaks the parity symmetry of the system and leads to mixed selection rules and nonvanishing second-order conductivity $σ_{xxx}$. The calculations show that $γ'$ decreases with the magnetic field, survives only to weak impurity scatterings, and exhibits a nonmonotonous dependence on the strength of the $xz$-mirror symmetry breaking. Our paper can provide a deeper insight into the intrinsic nonreciprocal magnetotransport phenomena in the topological semimetal material. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_13909 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quantum theory of the magnetochiral anisotropy coefficient in ZrTe$_5$ Wang, Yi-Xiang Li, Fuxiang Mesoscale and Nanoscale Physics Recent experiments performed the nonreciprocal magneotransport in ZrTe$_5$ and obtained a giant magnetochiral anisotropy (MCA) coefficient $γ'$. The existing theoretical analysis was based on the semiclassical Boltzmann equation. In this paper, we develop a full quantum theory to calculate $γ'$ and further explore the underlying physics. We reveal that the $xz$-mirror symmetry breaking term also breaks the parity symmetry of the system and leads to mixed selection rules and nonvanishing second-order conductivity $σ_{xxx}$. The calculations show that $γ'$ decreases with the magnetic field, survives only to weak impurity scatterings, and exhibits a nonmonotonous dependence on the strength of the $xz$-mirror symmetry breaking. Our paper can provide a deeper insight into the intrinsic nonreciprocal magnetotransport phenomena in the topological semimetal material. |
| title | Quantum theory of the magnetochiral anisotropy coefficient in ZrTe$_5$ |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2310.13909 |